Nitin rides a bicycle at the speed of 15 kms/hr, but stops for 10 minutes to take rest every 20 kms. How much time will he take to cover a…

Solution
Nitin takes rest for 10 minutes after every 20 km
=> For a period of 150 km, he will take rest = $\frac{150}{20} = 7.5$ = 7 times

=> Rest period = 7 * 10 = 70 minutes
Time taken to cover 150 km at a speed of 15 kmph
= $\frac{150}{15} = 10$ hrs
$\therefore$ Total time taken including rest period = 10 hrs + 70 minutes
= 11 hrs 10 minutes